<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="资料标题" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入资料标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="资料描述" prop="description">
        <el-input
          v-model="queryParams.description"
          placeholder="请输入资料描述"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['hyg:resource:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['hyg:resource:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['hyg:resource:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['hyg:resource:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="resourceList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="资料ID" align="center" prop="id" />
      <el-table-column label="资料标题" align="center" prop="title" />
      <el-table-column label="资料描述" align="center" prop="description" />
      <el-table-column label="文件URL" align="center" prop="fileUrl">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            @click="handleDownload(scope.row)"
          >下载</el-button>
        </template>
      </el-table-column>
      <el-table-column label="下载次数" align="center" prop="downloadCount" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['hyg:resource:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['hyg:resource:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改免费资料对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="资料标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入资料标题" />
        </el-form-item>
        <el-form-item label="资料描述" prop="description">
          <el-input v-model="form.description" type="textarea" placeholder="请输入内容" />
        </el-form-item>
        <el-form-item label="文件上传" prop="fileUrl">
          <el-upload
            class="upload-demo"
            action="/dev-api/common/upload"
            :headers="uploadHeaders"
          :on-success="handleUploadSuccess"
          :before-upload="beforeUpload"
          :limit="1"
          :file-list="fileList"
          >
          <el-button size="small" type="primary">点击上传</el-button>
          <div slot="tip" class="el-upload__tip">请上传资料文件</div>
          </el-upload>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listResource, getResource, delResource, addResource, updateResource } from "@/api/hyg/resource"
import axios from 'axios'
import {getToken} from "../../../utils/auth";
import {downloadResource} from "../../../api/hyg/resource";


export default {
  name: "Resource",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 免费资料表格数据
      resourceList: [],
      // 上传文件列表
      fileList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        title: null,
        description: null,
      },
      // 表单参数
      form: {},
      uploadHeaders: {
        Authorization: 'Bearer ' + (this.$store.getters.token || getToken())
      },
      // 表单校验
      rules: {
        title: [
          { required: true, message: "资料标题不能为空", trigger: "blur" }
        ],
        description: [
          { required: true, message: "资料描述不能为空", trigger: "blur" }
        ]
      }
    }
  },
  created() {
    this.getList()
  },
  methods: {
    /** 查询免费资料列表 */
    getList() {
      this.loading = true
      listResource(this.queryParams).then(response => {
        this.resourceList = response.rows
        this.total = response.total
        this.loading = false
      })
    },
    // 取消按钮
    cancel() {
      this.open = false
      this.reset()
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        title: null,
        description: null,
        fileUrl: null
      }
      this.fileList = []
      this.resetForm("form")
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1
      this.getList()
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm")
      this.handleQuery()
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset()
      this.open = true
      this.title = "添加免费资料"
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset()
      const id = row.id || this.ids
      getResource(id).then(response => {
        this.form = response.data
        if (this.form.fileUrl) {
          this.fileList = [{
            name: this.form.fileUrl.split('/').pop(),
            url: this.form.fileUrl
          }]
        }
        this.open = true
        this.title = "修改免费资料"
      })
    },
    // 文件上传成功处理
    handleUploadSuccess(response, file, fileList) {
      // 确保 response 是对象且包含 url
      if (response && response.code === 200 && response.url) {
        this.form.fileUrl = response.url;  // 关键！更新表单数据
        this.$message.success("文件上传成功");
      } else {
        this.$message.error(response?.msg || "文件上传失败");
      }

      // 手动构造 FormData 并发送请求
      const formData = new FormData();
      formData.append('file', file.raw);

      axios.post('/dev-api/common/upload', formData, {
        headers: {
          'Authorization': `Bearer ${token}`,
          'Content-Type': 'multipart/form-data'
        }
      }).then(res => {
        if (res.data.code === 200) {
          this.form.fileUrl = res.data.url;
        } else {
          this.$message.error(res.data.msg || '上传失败');
        }
      }).catch(err => {
        this.$message.error('上传失败：' + err.message);
      });
    },
    // 上传前校验
    beforeUpload(file) {
      const isLt10M = file.size / 1024 / 1024 < 10
      if (!isLt10M) {
        this.$message.error('上传文件大小不能超过 10MB!')
        return false
      }
      return true
    },
    // 文件下载
    handleDownload(row) {
      downloadResource(row.id).then(response => {
        const url = window.URL.createObjectURL(new Blob([response.data]));
        const link = document.createElement('a');
        link.href = url;
        link.setAttribute('download', row.title || 'file');
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
      }).catch(error => {
        this.$message.error('下载失败: ' + error.message);
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          // 检查 fileUrl 是否存在且非空
          if (!this.form.fileUrl) {
            this.$message.error("请上传文件");
            return;
          }
          // 提交逻辑
          if (this.form.id) {
            updateResource(this.form).then(() => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addResource(this.form).then(() => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids
      this.$modal.confirm('是否确认删除免费资料编号为"' + ids + '"的数据项？').then(function() {
        return delResource(ids)
      }).then(() => {
        this.getList()
        this.$modal.msgSuccess("删除成功")
      }).catch(() => {})
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('hyg/resource/export', {
        ...this.queryParams
      }, `resource_${new Date().getTime()}.xlsx`)
    }
  }
}
</script>
